President Trump met Israeli Strategic Affairs Minister Ron Dermer, a close confidant of Prime Minister Benjamin Netanyahu, on Thursday and discussed the nuclear talks with Iran and the war in Gaza, according to two sources briefed on the meeting.

This moment is testing the relationship of the two men, both of whom are politically divisive, fiercely combative and have outsize egos.

When the U.S. and Iran met for nuclear talks a decade ago, Israeli Prime Minister Benjamin Netanyahu railed against an emerging deal from the world’s most public stages, including in a fiery speech to Congress seen as a direct challenge to the Obama administration as it was wrapping up the talks.